Punching out Cats
New User
Joined: Jun 2004
Posts: 1
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I think this is one the worst ways to acheive better flow or a louder sound. The exhaust runs through a 2.5 inch pipe then through a empty canister and back into a 2.5 inch pipe, this is what creates that noise that sounds like a tank. it also creates a popping noise under deacceleration. though it is something that most people do and dont know it hurts the performance and flow.
Posting Guru
Joined: Nov 2003
Posts: 1,071
Likes: 1
From: Concord, New Hampshire
i actually compleatly removed it and replaced it with a pipe, therefore, there is less turblance, although, its much harder to get a sticker, i know that some people go through the hassle of actually putting a pipe through the gutted cat and welding it, but unfortunatly, i have to suffer with the turbulance in the front cat, do to the fact that i cannot replace it with a new one, (under 400 bucks) and cannot put a pipe in its place due to the shape and angles of the pipes.
Senior User
Joined: Apr 2004
Posts: 262
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From: Flagstaff, AZ
Originally Posted by ATC_250SX
yeah now that i think of it, my truck, which is a 87 f-150 5.4 4bbl, has no funny smell without cats, it actually smells better without them.
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crossf-150
1987 - 1996 F150 & Larger F-Series Trucks
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Jan 21, 2004 09:00 PM
